Permutation-lock



(No Model.) 2 Sheets-Sheet'J 1. H. GROSS. PERMUTATION LOCK. No. 318,982. Patented June 2, 1885.

IN VBNTOR ATTORNEYJI @my uw BY fm (No Model.) Y 2 sheets-sheet 2.

H. GROSS.

PERMUTATION LUCK No. 318,982. Patented Jne Z. 1885.

. jf Y 'WITNBSSES n INVBNTQR of' W l 0 f /Y/vl/M/ @4f-14 s BY l 6.50247 15M m ATTORNEYS' llnirrnn Smarts artnr @risica HENRY GROSS, OF CHICAGO, lLLlNOlS.

PERNIUTATION-LOCK.

SPEGEFIGATION forming part of Letters Patent No. 318,982, dated June 2, 1885.

Application filed April 4, 1884. (No model.)

To all whom, it may concern.-

Beit known that I, HENRY GROSS, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Permutation-Locks, of which I do -declare the following to be a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

In the construction of permutation-locks it is at present customary to provide the inner end of the dial-knob spindle or operating-arbor with a notched drive-wheel that will serve to withdraw the locking-bolt when the notches of the several tumblers and of the drive-wheel have been brought coincident, so as to permit the angle-bar to drop therein. A di'diculty met with in a lock so constructed is that the angle-bar, when the notch of the drive-wheel is immediately below it, rests upon the tumblers, and by careful manipulation the experienced safe-opener can ascertain j ust when the notches of each tumbler are brought beneath the angle-bar, and in this way can obtain access to thel safe without a knowledge of the combination.

One of the objects of my present invention is to provide an improved construction of double-notched drive-wheel that shall serve to retain the angle-bar above and off the tumblers until they have had their notches brought into alignment with each other and with the notches of the drive-wheel.

'A further object of my invention is toprolvide improved means for operating the locking-bolt from the drive-wheel, and to furnish means whereby this bolt shall be securely guarded against withdrawal until the notches ofthe tumblers and of the drive-wheels have been brought into proper position.

My invention `has also for its object to sustain the tumblers in such manner that they can be more easily moved, and that any one or more of these tumblers can be withdrawn or others added when it is desired to diminish or increase the complexity of the combination.

These'several objects of invention I have accomplished by the mechanism hereinafter described, illustrated in the accompanying drawings, and particularly defined in the claims at the end of this specification.

In the accompanying drawings, Figure 1 is a view in vertical transverse section of a permutation-lock embodying my. improvements. Fig. 2 is a viewr in rear elevation showing the bolt, the bolt-yoke, and one portion of the double drive-wheel. Fig. 8 is a view in longitudinal section on line y y of Fig. 4, showing in plan the subjacent parts. Fig. 4 is a view in rear elevation of my improved permutationlock, the back plate and tumblers being removed. Fig. 5 is a view in rear elevation showing one of the tumblers in position, A(its journal-pin being illustrated in section,)and showing the manner in which the bolt is dogged when thrown forward. Fig. 6 is adetail plan view of one of the tumblers.

A designates the door of a safe or vault, to the face of which is attached in suitable manner the dial-knob B, the inwardly-tapering arbor b, of which passes through the door and has formed thereon the threaded spindle b', having fixed thereto the interiorly-threaded hub C, and outer section D, of the double drive-wheel. The reduced front portion of this hub is suitably journaled, as shown, in the front plate ot' the lock-easing, against which bears the shoulder c ofthe hub, and upon the reduced rear portion, C', of the hub is journalcd the drive-yoke E, having the ear e, that connects by the pin e with the slotted end of the shank f of the bolt F, and having the ear e?, that is connected by the screw e3 with the latch-bar G. lThe drive-yokel Eis provided with the reduced portion or :dangering et, upon which is held, in a manner free to revolve, the inner drive-wheel section, D, that receives -its movement from the outer section, D, by means of the pin d, that enters the curved slot d of the section D. The secltions of the double drive-wheel are each pro- A vided with a notch, into which, when brought coincident, may drop the catch lug or shoulder g of the latch-bar G. From the upper portion of this latch-bar projects the pin y', that enters the long curved slot 71 -formed in the clogginglever H, and serves to lift this lever when the catch-lug g is thrown from the notches of the drive-wheel. The flogging-lever H is provided upon its inner face with the journalhub h', v through which passes the ypivot-bolt h2, and from its outer face projects the anglebar or dog h3, adapted to enter the notches of the tumblers when brought coincident beneath this bar. The short end h4 of the lever H is adapted' to bear against the shoulder f of the bolt F when the bolt is thrown forward and the lever is in the elevated position shown in Fig. 5. Aguide screw or pin, f2, passing through the slot f 3 of the bolt, serves to sustain the same as it is moved back and forth.`

From the construction of parts as thus far dened it will be seen that if by turning the dial-knob the notches of the driving-wheel sections be brought in line and the catch-lug g drops therein, then a movement of the drivewheel in the direction of the arrow, Fig. 4, will cause thelatch-bar G to partially rotate the drive-yoke E, which inturn will thrust forward the bolt F, connected theretobythe shank f. A further movement of the drivewheely in `the same direction will cause the catch-lug gto ride from out the notches of the drive-Wheel, thereby lifting the latch-bar G andtheV lever H until the short endh4 of, this lever is in position behind the shoulder f of the bolt F, to'securely guard this bolt against backward movement.

Upon therear of the lock-casing is held the ring I, having langes z', that rest upon and are screwed to the ribs-z", and around vthis ring ts the back plate of the casing. The interior of the ring I is screw-threaded, and receives the threaded portion of the cap K, carrying the journal-pin Il, that sustains the tumblers M of the lock.` Each of thesetumblers is heldin a manner free torevolve upon. the danged portion n of a distinct individual hub or journalsleeve, N, that is suitably perforated to receive thejournal-pin'L, and is provided Vwith a washer-flange, n', adapted to properly separate` the vtumblers, and Awith a reduced portion, a2,

adapted to fit within the flanged portion n of` the adjoining tumbler. The tumblers M 'have each the,` cut-away space m and ange m', around vwhich fits the usual segmental plate O, carrying they pin o, adapted to pass through the pin-,holes o and a sufficient distance be-` yond to catch the striking-arm O', pivotally held `ou the plate O of the adjacent tumbler by the pin-.02. A pin, o3, carried by the striking-arm and projecting into the slot o'L ofthe plate O, allows this `arm to swing a short distance, so that the tumblers maybe operated in either direction to bring their notches into alignment. A washer, M2, having a reduced portion `to twithin the flange of the inner tumbler, serves to retain the tumblers securely upon the journal-pin L. The angle-bar h3 projects over all the tumblers,and a catchpin, d", extends from the face of the `drivewheel to engage the striking arm of theinner tumbler. By .thus` providing the tumblers with individual hubs or sleeves an easier `movement of the tumblers is secured, and any oneor more of them can be removed, if it be desired to decrease the complexity of the compin or to supply their place upon the pin v shown with suitable washers.

It will be noticed that when the lock-bolt is thrown .forward thc angle-bar will be held above and off the tumblers untiltheir notches have been brought into proper alignment with each Vother and with the notches of the double drive-wheel; hence no indication can be had from the angle-bar as to the position of the `tumbler-notches beneath the same. v

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a permutation-lock, the combination, `with the operating-arbor, of a divided drivewheel carried by said arbor and formed of two connected sections, each provided with a notch to receive a latch-bar when the notches of the drive-wheel `sections are brought coincident, substantially as described.

2. In a permutation-lock, the combination, with the operating-arbor, of a double drivewheel formed of two sections, one of which is fixed on the operating-arbor and` theother of which is provided with a slot to receive a pin projecting from the adjoining section, substantially as described.

3. In a permutation-lock, the combination, with the operating-arbor, of l a drive-wheel and a hub fixed upon said arbor, a drive-yoke encircling the arbor, and a ,latch-bar vand a locking-bolt connected to said drive-yoke, substantially as described.

4; Ina permutation-lock, the combination, with the operating-arbor andahub and drivewheel thereon, .of4 the `drive-yoke encircling the arbor, the locking-bolt fand latch-bar attached to said yoke, and the dogging-leverk connected with-the latch-bar, substantially as described.

' 5. Ina permutation-lock, the combination, with the locking-bolt havinga shoulder thereon, of a dogging-lever having an end for engaging said shoulder, a latch-bar connected to said-dogging-lever and to thelocking-bolt, and

IOO

of an operating-arbor,` a drive-wheeha drivel yoke, a latch-bar and locking-bolt connected withsaid drive-yoke, a dogging-lever having an an gie-bar, and a series of tumblers, substantially as described.

7. In a permutation-lock, the combination, with the main casing having a detachable back plate or cap carrying a journal screwpin distinct from the mainarbor, which terminates at the tumblers, of a series of tumblers having individual hubs or sleeves mounted on said journal-pin, substantially as described.

8. In a permutation-lock, the combination,

with the series of tumblers and a journal-pin therefor, of a series of individual hubs or sleeves having reduced and cut-away portions,

the reduced portion of one hub being of a size t together, as set forth, and having the anges to t Within the cutaway portion oi' the adto hold the tumbiers apart, substantially as de- 1o joininlg hub, substantialy as described. scribed.

9. n a permutation-look, the combination, T 5 with a series of tumblers and their journal- BERRY GRGSS pin, of a series of individual hubs or sleeves Vitnesses: for the tumbiers, said hubs or sleeves hav- GEO. P. FISHER, Jr., ing reduced or cut-away portions adapted to JAMES H. PEIRCE. 

